参数资料
型号: ADUC7032BSTZ-8V-RL
厂商: Analog Devices Inc
文件页数: 71/128页
文件大小: 0K
描述: IC BATTERY SENSOR PREC 48-LQFP
标准包装: 1
系列: MicroConverter® ADuC7xxx
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 20.48MHz
连通性: LIN,SPI,UART/USART
外围设备: POR,PSM,温度传感器,WDT
输入/输出数: 9
程序存储器容量: 96KB(48K x 16)
程序存储器类型: 闪存
RAM 容量: 1.5K x 32
电压 - 电源 (Vcc/Vdd): 3.5 V ~ 18 V
数据转换器: A/D 2x16b
振荡器型: 内部
工作温度: -40°C ~ 105°C
封装/外壳: 48-LQFP
包装: 标准包装
其它名称: ADUC7032BSTZ-8V-RLDKR
Preliminary Technical Data
ADuC7032
Rev. PrD | Page 47 of 128
ADC GROUND SWITCH
The ADuC7032 features an integrated ground switch pin,
GND_SW located on Pin15. This switch allows the user to
dynamically disconnect ground from external devices. It allows
either a direct connection to ground, or a connection to ground
via a 20k, this additional resistor may be used to reduce the
number of external components required for an NTC circuit.
The ground switch feature may be used for reducing power
consumption on application specific boards..
An example application is shown in Figure 17. This diagram
shows an external NTC used in two modes, one using the
internal 20k resistor, and the second showing a direct
connection to ground, via the GND_SW. ADCCFG[7] controls
the connection of the ground switch to ground and
ADCMDE[6] controls the GND_SW resistance.
The possible combinations are shown in Table 18.
Table 18 : GND_SW Configuration
ADCCFG[7]
ADCMDE[6]
GND_SW
0
Floating
0
1
Floating
1
0
Direct connection to Ground
1
Connected to ground via 20k
resistor
05
99
4-
017
RREF
REG_AVDD
VTEMP
NTC
20k
REG_AVDD
VTEMP
NTC
Figure 17 : Example External Temperature Sensor Circuits
05
99
4-
018
20k
GND_SW
ADCMDE[6]
ADCCFG[7]
Figure 18: Internal Ground Switch Configuration
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